Abbaham cummings



A, CUMMINGS. 'SEWBR TRAP. No. 245,140. Patented Aug. 12,1881.

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UNITED ST TES PATENT OFFrcE.

ABRAHAM CUMMINGS, OF. PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO JOSEPH DONNELLY, OF- SAME PLACE.

'SEWER-TRA P.

SPECIFICATION forming part of Letters Patent No. 245,140, dated August 2, 1881.

I Application filed February 12, 1860.

To all whom it may concern Be it known that I, ABRAHAM OUMMINGs, a citizen of the United States, residing in the city and county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Sewer-Traps, of which the following is a specification, reference being had to the accompanying drawings, in which- Figure 1 is a top or plan view of the trap embodying my invention. Fig. 2 is a central vertical section of a portion thereof, the remainder being in side elevation.

Similar letters of reference indicate corresponding parts in the two figures.

My invention consists of certain combined improvements in sewer-traps, as follows: A cylinder open at top and bottom, having an imperforate wall; a suspending rim at the top of the cylinder; a lever fulcrumed to cars rising from said top rim, and carrying at one end a centrally-suspended valve and at the other anadj usting-weight, the combined advantages whereof are that there is no leakage through the wall of the cylinder, said wall not being pierced at any point. The masonry may be built close to the cylinder without the necessity of an extra surrounding casing. The 1e ver is near the inlet of the culvert or sewer, and the adjusting-weight immediately within reach of said inlet, and both lever and weight are above and clear of the place of entrance of the water, &;c., into the cylinder, the whole being connected as one piece, all as will be hereinafter set forth.

Referring to the drawings, A represents an upright cylinder or body adapted to receive sewage and convey the same to the sewer or vault.

B represents a conical valve, which closes upwardly against the bottom of the body or has its seat at any other suitable portion thereof, said valve being centrally connected to a rod, a, whose upper end is attached to a lever, 0, whose fulcrum is on a standard or ears, b, on the top or upper rim of the body A.

Fitted on the outer end of the valve is a sliding weight, D, which is held in adjusted position by means of aset-screw, d.

The operation is as follows: The weight D i is moved toward or from the fulcrum of the lever C so as to set the valve relatively to the work to be accomplished, for in some cases it is desirable that said valve should be sensitive, and in other cases the contrary. As the sewage enters the bod-y A it presses on the valve B and opens the same, so that it escapes, after which the valve closes and the return of sewergas through the trap is thereby prevented, this being assisted by the conical shape of the valve, which causes the sewage to cs cape at the base of the valve, the throat between the valve and its seat being sufliciently large to permit such escape of the sewage without, however, being entirely uncovered, and when thevalve is' closing some sewage will always be flowing through the throat so as to serve as a seal until said valve is entirely closed. The matters again collecting at the base of the valve serve as a seal until the weight D is overcome, and thus, should the valve not be sufliciently tight, the seal provides a guard against the return of sewer-gas. Furthermore, the conical shape of the valve prevents lodgment of the sewage on its upper face, for as soon as the sewage strikes the apex or upper face of the valve above its seat it rolls toward the base of the cone or periphery of the valve, where its discharge is provided for, as has been stated.

It will also be noticed that the interior of the body Ais unoccupied excepting by the rod (1 and valve B, and that the lever (l and weight D are removed from contact of the sewage, so that there is but little liability of the trap to clog with parts within the body A, and there 8 5' are durability and reliability of operation of the same.'

I am aware that it is not new to suspend the bell of a furnace from one end of a lever, the

other end of said lever being connected to a 0 piston-rod the piston whereof is operated by a blast of air for the purpose of raising said bell, and the bell being allowed to fall by its own weight when the blast is shut off. I am also aware that the several devices shown by me are not new individually; also, that a lever, weight, and valve have been arranged (for the same general purpose as mine) below a body or cylinder corresponding to A, where said lever would be in danger of fouling and clog- 10o ging; also, that a lever opera-ting such a valve has been arran ged above the body with a weight on the end nearest the valve,said weight operating with the fluid, so that there is no chance of automatic opening by the force of the flowing water. I do not claim any of the above constructions.

What I do claim is- The improved sewer-trap, consisting of the iniperforate cylinder A, provided with a top rim, a, the ears I) rising from and fixed to said top ri1n,and the lever C fulernmed to said ears ABRAHAM OUMMIN GS.

\Vitnesses JOHN A. WIEDERSHEIM, W. F. KIROHER. 

